The murder of an anti-racist protester in 1979 by a special unit of the Met Police was followed by a gruelling battle to win answers about what happened on that tragic day. Now material related to that campaign is available to the public and researchers for the first time at the Bishopsgate Institute. INDIANNA PURCELL reports

TONY COLLINS looks at the evidence he has uncovered in his research on our early labour movement of deep and hostile police infiltration that ruined lives in the last century

TIM DAWSON looks at how obsessive police surveillance of journalists undermines the very essence of democracy

LINDSEY GERMAN argues that the interim report on undercover policing shows the Metropolitan Police is not fit for purpose

In an exclusive investigation, BETHANY RIELLY looks at how the state targeted leading politicians and campaigning groups — labelling many well-known figures 'extremists' and 'subversives' for attempting to hold the police to account

JAMIE JOHNSON recommends an ultimately depressing and haunting book that is a damning criticism of our society

With undercover policing under the spotlight, these operations will continue with extra efforts to hide them from public scrutiny writes NICK WRIGHT

Animal rights activist Daryl Dixon speaks to the Star after discovering his friend in the 1980s was an undercover copper

Inquiry hears from former officer who infiltrated the Socialist Workers Party and the Troops Out Movement

The activist said she was very vulnerable as a result of recently leaving her abusive ex-husband

Officer laughs in inquiry while recalling punch to activist

Veteran activist Diane Langford was spied on by several undercover officers for her political activism

Activist takes the Met to court in the latest step in her 10-year battle for the truth

BETHANY RIELLY charts the story of shattered lives and sexual abuse exposed by the undercover policing inquiry so far – and asks what next for those who fought so hard to bring the inquiry about

Spellar urged to clarify whether he assisted Tories as an EETPU official – Bethany Rielly reports